Hey DJ,
I installed the Rancho RS9000 on my VX and have it set to the heighest setting and find it plenty stiff.

As for mileage don't count on those shock not being bad. Mine went out at at in the high 20k. I knew they were going and told the mechanic at the dealer but they claimed they were OK. Well my warranty went out and I checked them myself and guess what, they had leaked and I had no compression on a couple of them.
What got me ticked was I told them when I had full coverage for free replacement but the stated they were good - O-Well
I was worried about the Ranchos before I order them but am happy with them. One note on these is that they are NOT gas charged and do not rebound with pressure.